ACCO Semiconductor

ACCO Semiconductor, Inc. operates as a fabless semiconductor company, focusing on the design and development of radio frequency (RF) front-end components. The company was founded in 1994 by Denis Masliah, who brought extensive experience in designing RF and microwave circuits from his time at Thomson CSF, Raytheon, and Philips. Initially based around Paris, the company operated as a service firm, designing high-frequency chips for other semiconductor brands before pivoting around 2007 to focus on its own patented CMOS power amplifier technology.

The core of ACCO's business is the production of critical RF components, such as Multi-mode Multi-band Power Amplifiers (MMPA), using a standard complementary-metal-oxide-semiconductor (CMOS) process. This approach represents a significant shift from the more expensive Gallium-Arsenide (GaAs) technology traditionally used in mobile phone power amplifiers. By leveraging a patented high-breakdown voltage CMOS transistor, ACCO's products aim to deliver comparable performance to GaAs but at a reduced cost and complexity, a key selling point for its clients. The company's business model is fabless, meaning it designs the chips but outsources the high-volume manufacturing process. This strategy allows ACCO to focus on research and development while remaining capital-efficient.

ACCO targets the mobile communications and Internet of Things (IoT) markets. Its primary clients are manufacturers of smartphones and other mobile devices, particularly for the LTE market in Asia and Europe. The company's technology enables the integration of power amplifiers and controllers onto a single die, which reduces the size and cost of RF front-end modules in these devices. For instance, in 2015, ACCO began mass production of its AC26120, a CMOS multimode, multiband power amplifier for smartphones and IoT applications. The company has received significant financial backing, raising approximately $118 million over nine funding rounds from investors including Bpifrance, Foundation Capital, Pond Ventures, and Partech Ventures. A notable funding round in 2016 raised $35 million to scale production and expand customer support.

Keywords: fabless semiconductor, RF front-end components, CMOS power amplifiers, mobile communications, Internet of Things, Multi-mode Multi-band Power Amplifiers, MMPA, Denis Masliah, RF solutions, CMOS RF, cellular radio components, 4G power amplifiers, high-linearity RF components, mobile handsets, wireless technology, semiconductor design, RF integration